File:Ernst_Alexanderson_(1920).jpg
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Ernst_Alexanderson_(1920).jpg (314 × 442 pixels, file size: 55 KB, MIME type: image/jpeg)
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Summary
DescriptionErnst Alexanderson (1920).jpg |
English: In 1920 Ernst Alexanderson was the Chief Engineer of the Radio Corporation of America. He is best known for the development of the Alexanderson Alternator radio transmitter. |
Date | |
Source | Photograph included with the article "The March of Science", on page 266.of the May 1920 issue of The New York Times Current History magazine |
Author | None listed |
Licensing
Public domainPublic domainfalsefalse |
This work is in the public domain in the United States because it was published (or registered with the U.S. Copyright Office) before January 1, 1929.
Public domain works must be out of copyright in both the United States and in the source country of the work in order to be hosted on the Commons. If the work is not a U.S. work, the file must have an additional copyright tag indicating the copyright status in the source country.
Note: This tag should not be used for sound recordings.PD-1923Public domain in the United States//commons.wikimedia.org/wiki/File:Ernst_Alexanderson_(1920).jpg |
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Date/Time | Thumbnail | Dimensions | User | Comment | |
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current | 21:29, 30 December 2021 | 314 × 442 (55 KB) | Thomas H. White | Uploaded a work by None listed from Photograph included with the article "The March of Science", on page 266.of the May 1920 issue of The New York Times Current History magazine with UploadWizard |
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